Modi's caste card is widely as an attempt to woo Bihar's backward castes, Dalit and Mahadalits.
The BJP is confident of support from the upper castes - Brahmins, Bhumihar and Rajputs - and also hopes to garner support of backward castes and Dalits, thanks to its alliance with the Lok Janshakti Party (LJP) of Ram Vilas Paswan and the Rashtriya Lok Samata Party (RLSP) of Upendra Kushwaha.
But with the Congress joining hands with the RJD and with Lalu Prasad claiming that his traditional Yadav-Muslim support base was in place, this election will be a major challenge to the BJP.
JD-U leaders are confident of doing better than last time in the final round of polling.
